MX2008012932A

MX2008012932A - Hybrid feed mechanism.

Info

Publication number: MX2008012932A
Application number: MX2008012932A
Authority: MX
Inventors: Peter Stein
Original assignee: Peter Stein
Priority date: 2006-04-06
Filing date: 2007-03-30
Publication date: 2008-12-18
Also published as: WO2007113497A1; RU2448303C2; RU2008143981A; BRPI0710309A2; AU2007232385B2; JP2009532657A; NZ571666A; US8100066B2; CA2648343A1; US20090173257A1; CN101427074A; EP2005065A1; ZA200808912B; GB0606898D0; AU2007232385A1

Abstract

A feed mechanism in which a ram (2) fed from a hopper (1) compresses a fuel against a closed valve (11) which is then opened for the ram to push the fuel towards a rotary scroll (6) for delivery to a processing vessel.

Description

HYBRID FOOD MECHANISM DESCRIPTIVE MEMORY Conventional plunger feeders used to inject a fuel into a processing vessel have a problem with certain types of fuels that have a tendency to compact in a manner that clogs the feeder and stops the flow of fuel to the container. This is particularly a problem with larger plunger units and can result in serious procedural problems. This invention has been designed to provide a solution to this particular problem with respect to the supply of fuels to a rotating anaerobic gassing vessel. However, another feeding mechanism is not limited for use in gasifiers. The fuel is compressed by means of a piston against a closed valve to form a sediment that acts as a compact fuel and also a barrier to prevent the entry of air. In certain cases it may be necessary to provide a cutter, preferably a rotary cutter between the guillotine valve and the displacement tube to break up the fuel pellet and assist the fuel supply in the displacement feeder. However, a preferred version of the invention incorporates a chamber between the plunger feeder and the displacement feeder to receive fuel from one or more plunger feeders prior to delivery to the shifting feeder to aid in the fuel distribution process. The introduction of this camera in most cases obviates the need for a rotary cutter. It should be noted that the feeder mechanism is not limited to supplying a gasifier, but can be used in a wide variety of processing vessels. An additional benefit is that more than one plunger can be incorporated to increase or vary the fuel supply and even out of its flow. By way of example, a specific embodiment of this invention with and without an intermediate chamber will be described with respect to the accompanying drawings in which. Figure 1 is a side view of the feeder mechanism with the intermediate chamber and a single plunger feed. Figure 2 is a side view of the feeder mechanism with the intermediate chamber and two plunger feeds. Figure 3 is a view from the output end of the feeder mechanism with the intermediate chamber. Figure 4 is a similar view of a feeder with two plungers providing a single spiral one open, one closed without intermediate chamber. Figure 5 is a side view of a feeder without the intermediate chamber.

The crumbled and dried fuel was supplied to a feed hopper 1 when it is supplied by gravity in a plunger tube 12 while the plunger of the feeder 2 is retracted by means of a hydraulic plunger 10 along the guides 3. The plunger of the the feeder 2 returns to press the fuel discharge against a closed guillotine valve 1 1. The guillotine valve then opens and the fuel pellet is pushed by means of the plunger of the feeder towards the displacement tube 43 containing the spiral 6 driven by an electric unit 5. Due to the high temperature in the retort of the gasifier, the part of the feeder inserted in the gasifier is cooled with water introduced through the inlet 8 into a cooling sheath 7. The fuel is expelled from the driven spiral at the end of tube 9 towards the gasifier. In the preferred embodiment of the invention, an intermediate chamber 13 is provided between the plunger feeder and the spiral. More than one feed plunger can be connected to the intermediate chamber or the displacement feeder, and this gives the advantage of a possible variation of the fuel supply and smoothing the fuel flow towards the spiral. In addition, a rotary cutter 14 can be adjusted between the guillotine valve and the displacement tube to improve fuel flow. While this invention has been described in terms of a specific embodiment thereof, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope thereof.

Claims

NOVELTY OF THE INVENTION CLAIMS 1 .- A feeding mechanism in which a piston supplied from a hopper compresses a fuel against a closed valve that is then opened so that the piston pushes the fuel to fall into the intermediate chamber provided between the valve and the displacement feeder to assist the distribution of fuel before entering the rotary displacement feeder for supplying it to a processing vessel, the length of the piston is such that it closes the base of the feed hopper and thus prevents fuel from entering behind the plunger when the positions are extended and open the base of the feed hopper when it is in the retracted position. 2 - The feeding mechanism according to claim 1, further characterized in that the lower circumferential section of the plunger is cut in the case of a hollow or concave plunger body in the case of a solid plunger by means of a length extending approximately from the outer end of a hopper discharge to a point closer to the outer end of the plunger to release any fluid trapped between the plunger and its feed tube. 3. - The feeding mechanism according to claim 1 or claim 2, further characterized in that the valve is a sliding guillotine valve. 4. - The feeding mechanism according to any of the preceding claims, further characterized in that there are two or more pistons that make contact with a single intermediate chamber. 5. - A container of any of the preceding claims in which the outlet pipe is cooled by water.